Machine for forming band fastenings



Feb. 18, 1930. H. H. PAYzANT MACHINE FOR FORMING BAND FASTENINGS 2 Sheets-Sheet 1 Filed NOV. 24, 1926 gnvcutoa Feb. 18, 1930. H. H. PAYzANT 1,747,880

MACHINE FOR FORMING BAND FASTENINGS Filed Nov. 24, 192e 2 sheets-sheet 2 gnvefntoz l Wezzyyz'an liborucqd am N1 Patented Feb. 18, 1930 UNITED STATES PATENT OFFICE MACHINE FOR- FORMING BAND FASTENINGS Application tiled November 24, 192'6. Serial No. 150,598.

This invention relates to a machine and method for joining overlapping parts of metallic bands and is particularly adapted for securing together the ends of bands, such as 5 those used in binding packages, bales or bundles of heavy or bulky material. The metallic band fastening of my copending application, Serial Number 150,597 filed November 24, 1926, may be formed advantageously by the method or with the machine hereinafter described and claimed.

It is the object ofthis invention to economically and quickly form a metal band fastening having the advantages of strength and security agalnst accidental breakage or removal and at the same time adapted to permit quick and easy removal when it is desired to open or releasethe package confined thereby.

A further object is to provide a compact and inexpensive machine or tool for quickly and easily forming such fastenings.

In the accompanying drawings, Figure 1 is a side elevation of my improved machine; Fig. 2 is a plan'view of one form of the completed fastening; Fig. 3 is a plan view of a simplified form of the fastening;

Fig. 4 is a section taken longitudinally' through the jointed ends of the band, showing the key in the position occupied before the joint is compressed; Fig. 5 is a perspective view showing a suitable arrangement of lthe bands about the bale or package Fig. 6 is a section taken on the line 6-6 of ig. 3; Fig. 7 is a fragmentary section taken on the line 7*'7 of Fig. l; Fig. 8 is a side view of the machine with thev cover plate removed and with the base of the machine partially in longitudinal section to show the key driving mechanism; Fig. 9 is a vertical section taken on the line 9 9 of Fig. 1 and Fig. 10 is a horizontal section through the base of the machine showing the keyV driving mechanism and anvil in plan view.

Referring particularly to Figures 2 to 6, inclusive, it will be noted that this invention is adapted for seeuringmetal bands 1 about a bale 2. The ends 3 and 4 of the bands l are overlapped, and pairs of parallel slits 5 are cut through both overlapped parts. The

strips of metal between the slits are offset,

as indicated at 6 in Figs. 4 and 6. The registering depressions thus formed in the overlapping parts of the band are offset downward sufficiently to permit insertion of a straight key 7 between the upper surface of the depressed portions and bottom surfaces ofthe side portions of the band. Finally, the offset portions of the band are compressed against the key so as to form a bend 8 in the key between the slits 5, as shown in Fig. 6. The key 7 is preferably formed with a wedgeshaped forward end 9 to facilitate insertion in the socket formed'by the depressed portions 6.

The machine has a suitable frame or casing 10, adapted to support the several bearings and moving parts. At one side a cover plate 11 is held in place by screws 12 and is removable to allow access to the interior parts of the machine. The casing l0 is arranged to stand in upright position upon a base plate 13, which projects at the forward end of the machine forming an anvil 14, adapted to be inserted beneath the overlapped ends of a band l. A female die opening 16 is formed in the anvil 14 to receive the portions 6 of the band l, which are offset to form the socket for the key 7. Above-this die opening 16 is mounted the male die 17, arranged to coact with the die opening 16 in cutting the slits 5 and in offsetting the portions 6 of the band. In order to allow the strips of metal between the slits 5 to remain attached to the band l, substantial clearance is allowed between the opposite edges of the die 17 and die opening 16 (see Fig. 9).

A. vertically slidable bar 19 carries the die 17 upon its lower end and is connected by a. link 20 with a hand lever 21 for operating the die. This lever pivots upon' a pin 22`and projects through an opening 23 in the casing 10, having a handle 24 adapted to be manipulated to impart reciprocating movement to the die 17. The lever 21 is normally held in elevated position by a compression spring 25, which rests at its lower end upon a rigid projection 26 in the casing 10 and is disposed about a link 27 for transmitting motion between the lever and spring. A small pin 28, fixed in the link 27, projects to confine the sprin at its upper end. The link 27 is pivotal y joined at its lower end to a crank 29, which is supported for pivotal movement upon a pin in the casing. Rigidly connected to the crank 29 is a downwardly projecting arm 31 adapted to actuate a slide 32 in the base of the machine. This slide 32 carries upon its forward end a blade 33, adapted to drive successively the keys 7 which are disposed one upon another in a magazine 36. The driving blade 33 and lowerl end of the magazine 36 are arranged in alignment with the socket formed by the die 17 in the band 1. An opening 35 in the plate 11 is provided to facilitate filling the magazine 36 with the keys 7.

To deliver the keys 7 successively into the path of the blade 33, I provide a follower34. As best shown in Fig. 7, this follower is U- shaped and extends substantially vertically in the magazine 36. A branch 37 of the follower extends downward into a spring rey cess 38 in the casing 10 and has rigidly fixed on its lower end a head 39 adapted to engage the lower end of a compression spring 40, located in the recess 38. The upper end of the spring 40 engages the casing 10. Thus, ranged to resiliently press the follower 34 upon the keys 7 in the magazine 36. A handle 41 upon the upper end of the follower is provided to facilitate raising it against the action of the spring 40 when it is desired to ill the magazine 36 through the opening 35. Then the follower 34 is raised to permit {illing of the magazine 36, it may be turned so that its lower end rests in a recess 42 formed in the casing. l

At one side of the die 17, I mount a second movable die 43, which is adapted to be operated to cut olf from a roll or-continuous supply of the band 1, the part around the bundle. The die 43 further operates tocompress the the spring 40 is arsocket against the key andthus completes the and said plunger rigid union of the overlapped parts of the band. As vshown in Fig. 9, the die 43 has'a cutting edge 44 adapt/ed to sever the band 1 against a coacting edge of a stationary cutter 45. The bottom of this cutter 45 is spaced from the anvil 14 to permit the inner or bottom lap of the band 1 to pass beneath said die. The bottom face of the die 43 is adapted Ato compress the o'set portion 6 of the band against the anvil 14. A verticallyslidable plunger 46 is rigidly connected to the die 43 has a. mushroom head 47 ou its upper end adapted to be manipulated to thrust said die 43 downward. Suitable bearings for the plunger 46y are carried by the cover plate 11, the lower bearing 51 being removable. An annular recess 48 between the lmariugs is provided for a spring 49, adapted to return the plunger upward. This spring 49 is compressed. when the plunger 46 is a suitable shoulder :in f

thrust downward, by a collar 50 rigidly mounted on the periphery of said plunger.

pe'ratmt In operation, a supply of the band 1 may be furnished in the form of a roll. When a bundle 2 is to be bound, the end 3 of the band 1 is drawn around the bundle while unrolling the band and the part or end 4 is caused to overlap the end 3. Now the anvil 14 is inserted between the bundle and overlapping parts of the band, with the part 1, which extends to the roll, above the cutter 45- and separated from the band extending around thebundle, as indicated in Fig. 9. The band may be drawn snugly about the bundle by hand or by the use of any for this purpose. With the overlapping parts 3 and 4l directly beneath the die 17, and while holding the band tightly around the bundle, the lever 21 is .operated to thrust the die 17 downward through bo h thicknesses of metal. This cuts the slits 5 in spaced, parallel relation to the side edges of the band and offsets the strips of metal between said slits downward into the female die 16. The lever 21 is now released to permit the spring 25 to return said lever upward. When thus released, the sprino 25 raises the link 28 and thereby operates t e crank 29vandarm 31 to thrust the blade 33 against the bottom key in the magazine 36. A key 7 is thereby removed from the bottom of the magazine and thrust into the socket formed by the offset portions 6 of the overlapping by merely shifting' the machine to the left, relative to the band (as seen in Figure 9) the joint with the key in place in the socket is brought beneath the die 43 to the position shown in Figure 9. By thrusting the mushroom headv of the plunger 46 downward, the edge 44 0f the die 43 is caused to sever the end 4 of the band from the part 1'a extending to' theroll and immediately thereafter the bottom face of the die 43 strikes the overlapping ends at the joint and crushes the offset portions 6 so as to bend the key 7 into the opening between the slits 5. Thus, a rigid union is completed and the machine may be withdrawn from beneath the overlapped portions of the band.

It will be evident that the tension upon the band 1 extending around the bundle 2 is directed transverse the wide key 7, so that the joint has ample strength. I prefer to construct the keys 7 from soft, thin metal in order to facilitate removing the band when it is desired to open or release'the bundles. With such keys, the fastening may be broken by merely grasping the end 4 and pulling the band obliquely away from the bundle and towards the key. This either tears or bends the key out of engagement with the socket in the overlapping parts of the band. The fastening formed by this invention is unusually ends of the band. Now

vsuitable .or well known tool V Hat and thus permits stacking of the bundles and minimizes the danger of catching or breaking the fastening inadvertently during handling. To form the type of fastening shown in Fig. 2, it will be evident that it is only necessary to provide the die 17 with double cutting and offsetting portions and to form a second female die 16 in the anvil 14.

Having described my invention What I claim as new and desire to protect by Letters Patent is:

1. In a machine adapted to secure overlapping parts of a metal band together, a die arranged to form spaced slits in both of said parts of the band and also adapted t0 form a socket by offsetting the metal of said parts between the slits, means for delivering a key in alignment with said socket, means for driving a key into said socket and means operable successively to actuate said die and key driving means.

2. In a machine adapted to secure overlapping parts of a band together, a die arranged to cut spaced slits in both of said overlapping arts and also adapted to form a socket by offsetting the metal of said parts between the slits, means for delivering a key in alignment with said socket, means for driving a key so delivered into said socket, means operable successively to actuate said die and key driving means and a second die arranged to be operated to compress said offset metal upon a key in said socket.

3. In a machine adapted to secure overlapping parts of a metal band together, a die arranged to form spaced slits in said overlapping parts and also adapted to form a socket by offsetting the metal of said parts between the slits, means for insertin a key in said socket, means operable success1vely to actuate said die and key inserting means and a second die arranged to be operated to fix the joint so formed by compressing said offset metal upon said key and bendi said key between the slits formed by sai first mentioned die.

4. In a fastening machine for a packa e to be confined by a metal band encircling sa1d package, the ends of said band being overlapped, a blade adapted to be inserted between said overlapped ends and the package, a female die carried by said blade, a male die mounted to reciprocate above said female die and having cutting edges adapted to form parallel slits in said overlapping parts, said male die bein adapted to coact with said female die in orming offset portions in said overlapping parts, means for supplying keys in alignment with a socket formed by said dies, thrust means for driving a key into said socket and means for alternately operating said male die and thrust means.

5. In a fastening machine for a package to be confined by a metal band encircling said packa e, the ends of said band being overlappe a blade adapted to be inserted between said overlapped ends and the package, a rectan lar female die carried by said blade, a ma e die mounted to reciprocate above said female die and having spaced cutting edges adapted to form parallel slits in said overlapping parts, said male die being adapted to coact with said female die in forming offset portions in said overlapping parts, means for supplying keys in alignment with a socket formed by said dies in said overlapping parts, horizontally movable thrust means for driving a key into sald socket and manually operable means for alternately operating said male die and thrust means.

6. In a fastening machine for a package to be confined by a metal band encircling said package, a part of said band being arranged to overlap the inner end of said band, a blade anvil adapted to be inserted between said overlapped end and the package, a female die carried by said blade, a male die mounted to reciprocate above said female die and having cutting edges adapted to form parallel slits in said overlapping parts, said male die being adapted to coact with said female die in forming offset portions constituting a socket for a key in said overlapping parts, means for supplying keys in alignment with a socket formed by said dies, thrust means for driving a key into said socket, means for alternately operating said male die and thrust means, a cutter adapted to be inserted between the overlapped parts of said band, means for severing the outer overlapped part against said cutter and means for compressing said socket upon said anvil.

In testimony whereof, I have hereunto signed my name to this specification.

HENRY H. PAYZANT. 

